extension: Mark backwards-compatibility typedefs as not introspectable
requested to merge atheriel/nautilus:mark-deprecated-extension-symbols-as-not-introspectable into master
I believe these are only included to prevent breakage of existing C
extensions, but as they're not intended for actual use we should mark
them with (skip)
.
This has the added benefit of making the VAPI file generated from the resulting GIR file much less noisy.